DaisyMartinez4 DaisyMartinez4

06-01-2017
Mathematics

contestada

Lucy is a dress maker. She sews 4/7 of a dress in 3/4 of an hour. At this rate, how many dresses does Lucy sew in one hour?

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MissPhiladelphia MissPhiladelphia

20-01-2017

this can be solve by proportinality
amount of dress is directly proportional to time she make the dress
4/7 = a (3/4)a = 4/7 / (3/4)a = 16/21
so if she sew for 1 hr
d = atd = 16/21 (1)d = 16/21 of a dress

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